That's a cool addition, thank you! Is there a recommended structure people could follow? I know YANAL, but would what you say in there be legally binding or could get you in trouble? I guess very much an "it depends"?
(Looking at the somewhat unfortunate on-thread interaction, I think one thing worth adding to the post is a direct link to the docs: https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/adding-an-accessibility-page-to-your-repository. It's linked from the GitHub blog post you did link out to, but, as we've seen, not everyone follows the link chain.)